Matthew 25:3-10

The foolish took their lamps, but took no oil with them;

1 Thessalonians 2:9

You recall, brothers, my labor and toil; how, while working at my trade day and night, so as not to become a burden to any of you, I proclaimed to you the gospel of God.

2 Thessalonians 3:7-9

For you know well how you must imitate me. For I did not lead an idle or disorderly life among you;

Treasury of Scripture Knowledge

Summary

She perceiveth that her merchandise is good: her candle goeth not out by night.

Bible References

Her candle

Matthew 25:3
The foolish took their lamps, but took no oil with them;
1 Thessalonians 2:9
You recall, brothers, my labor and toil; how, while working at my trade day and night, so as not to become a burden to any of you, I proclaimed to you the gospel of God.
2 Thessalonians 3:7
For you know well how you must imitate me. For I did not lead an idle or disorderly life among you;